1 // SPDX-License-Identifier: (GPL-2.0 or MIT) 2 /* 3 * DSA driver for: 4 * Hirschmann Hellcreek TSN switch. 5 * 6 * Copyright (C) 2019-2021 Linutronix GmbH 7 * Author Kurt Kanzenbach <kurt@linutronix.de> 8 */ 9 10 #include <linux/kernel.h> 11 #include <linux/module.h> 12 #include <linux/device.h> 13 #include <linux/of.h> 14 #include <linux/of_device.h> 15 #include <linux/of_mdio.h> 16 #include <linux/platform_device.h> 17 #include <linux/bitops.h> 18 #include <linux/if_bridge.h> 19 #include <linux/if_vlan.h> 20 #include <linux/etherdevice.h> 21 #include <linux/random.h> 22 #include <linux/iopoll.h> 23 #include <linux/mutex.h> 24 #include <linux/delay.h> 25 #include <net/dsa.h> 26 27 #include "hellcreek.h" 28 #include "hellcreek_ptp.h" 29 #include "hellcreek_hwtstamp.h" 30 31 static const struct hellcreek_counter hellcreek_counter[] = { 32 { 0x00, "RxFiltered", }, 33 { 0x01, "RxOctets1k", }, 34 { 0x02, "RxVTAG", }, 35 { 0x03, "RxL2BAD", }, 36 { 0x04, "RxOverloadDrop", }, 37 { 0x05, "RxUC", }, 38 { 0x06, "RxMC", }, 39 { 0x07, "RxBC", }, 40 { 0x08, "RxRS<64", }, 41 { 0x09, "RxRS64", }, 42 { 0x0a, "RxRS65_127", }, 43 { 0x0b, "RxRS128_255", }, 44 { 0x0c, "RxRS256_511", }, 45 { 0x0d, "RxRS512_1023", }, 46 { 0x0e, "RxRS1024_1518", }, 47 { 0x0f, "RxRS>1518", }, 48 { 0x10, "TxTailDropQueue0", }, 49 { 0x11, "TxTailDropQueue1", }, 50 { 0x12, "TxTailDropQueue2", }, 51 { 0x13, "TxTailDropQueue3", }, 52 { 0x14, "TxTailDropQueue4", }, 53 { 0x15, "TxTailDropQueue5", }, 54 { 0x16, "TxTailDropQueue6", }, 55 { 0x17, "TxTailDropQueue7", }, 56 { 0x18, "RxTrafficClass0", }, 57 { 0x19, "RxTrafficClass1", }, 58 { 0x1a, "RxTrafficClass2", }, 59 { 0x1b, "RxTrafficClass3", }, 60 { 0x1c, "RxTrafficClass4", }, 61 { 0x1d, "RxTrafficClass5", }, 62 { 0x1e, "RxTrafficClass6", }, 63 { 0x1f, "RxTrafficClass7", }, 64 { 0x21, "TxOctets1k", }, 65 { 0x22, "TxVTAG", }, 66 { 0x23, "TxL2BAD", }, 67 { 0x25, "TxUC", }, 68 { 0x26, "TxMC", }, 69 { 0x27, "TxBC", }, 70 { 0x28, "TxTS<64", }, 71 { 0x29, "TxTS64", }, 72 { 0x2a, "TxTS65_127", }, 73 { 0x2b, "TxTS128_255", }, 74 { 0x2c, "TxTS256_511", }, 75 { 0x2d, "TxTS512_1023", }, 76 { 0x2e, "TxTS1024_1518", }, 77 { 0x2f, "TxTS>1518", }, 78 { 0x30, "TxTrafficClassOverrun0", }, 79 { 0x31, "TxTrafficClassOverrun1", }, 80 { 0x32, "TxTrafficClassOverrun2", }, 81 { 0x33, "TxTrafficClassOverrun3", }, 82 { 0x34, "TxTrafficClassOverrun4", }, 83 { 0x35, "TxTrafficClassOverrun5", }, 84 { 0x36, "TxTrafficClassOverrun6", }, 85 { 0x37, "TxTrafficClassOverrun7", }, 86 { 0x38, "TxTrafficClass0", }, 87 { 0x39, "TxTrafficClass1", }, 88 { 0x3a, "TxTrafficClass2", }, 89 { 0x3b, "TxTrafficClass3", }, 90 { 0x3c, "TxTrafficClass4", }, 91 { 0x3d, "TxTrafficClass5", }, 92 { 0x3e, "TxTrafficClass6", }, 93 { 0x3f, "TxTrafficClass7", }, 94 }; 95 96 static u16 hellcreek_read(struct hellcreek *hellcreek, unsigned int offset) 97 { 98 return readw(hellcreek->base + offset); 99 } 100 101 static u16 hellcreek_read_ctrl(struct hellcreek *hellcreek) 102 { 103 return readw(hellcreek->base + HR_CTRL_C); 104 } 105 106 static u16 hellcreek_read_stat(struct hellcreek *hellcreek) 107 { 108 return readw(hellcreek->base + HR_SWSTAT); 109 } 110 111 static void hellcreek_write(struct hellcreek *hellcreek, u16 data, 112 unsigned int offset) 113 { 114 writew(data, hellcreek->base + offset); 115 } 116 117 static void hellcreek_select_port(struct hellcreek *hellcreek, int port) 118 { 119 u16 val = port << HR_PSEL_PTWSEL_SHIFT; 120 121 hellcreek_write(hellcreek, val, HR_PSEL); 122 } 123 124 static void hellcreek_select_prio(struct hellcreek *hellcreek, int prio) 125 { 126 u16 val = prio << HR_PSEL_PRTCWSEL_SHIFT; 127 128 hellcreek_write(hellcreek, val, HR_PSEL); 129 } 130 131 static void hellcreek_select_counter(struct hellcreek *hellcreek, int counter) 132 { 133 u16 val = counter << HR_CSEL_SHIFT; 134 135 hellcreek_write(hellcreek, val, HR_CSEL); 136 137 /* Data sheet states to wait at least 20 internal clock cycles */ 138 ndelay(200); 139 } 140 141 static void hellcreek_select_vlan(struct hellcreek *hellcreek, int vid, 142 bool pvid) 143 { 144 u16 val = 0; 145 146 /* Set pvid bit first */ 147 if (pvid) 148 val |= HR_VIDCFG_PVID; 149 hellcreek_write(hellcreek, val, HR_VIDCFG); 150 151 /* Set vlan */ 152 val |= vid << HR_VIDCFG_VID_SHIFT; 153 hellcreek_write(hellcreek, val, HR_VIDCFG); 154 } 155 156 static void hellcreek_select_tgd(struct hellcreek *hellcreek, int port) 157 { 158 u16 val = port << TR_TGDSEL_TDGSEL_SHIFT; 159 160 hellcreek_write(hellcreek, val, TR_TGDSEL); 161 } 162 163 static int hellcreek_wait_until_ready(struct hellcreek *hellcreek) 164 { 165 u16 val; 166 167 /* Wait up to 1ms, although 3 us should be enough */ 168 return readx_poll_timeout(hellcreek_read_ctrl, hellcreek, 169 val, val & HR_CTRL_C_READY, 170 3, 1000); 171 } 172 173 static int hellcreek_wait_until_transitioned(struct hellcreek *hellcreek) 174 { 175 u16 val; 176 177 return readx_poll_timeout_atomic(hellcreek_read_ctrl, hellcreek, 178 val, !(val & HR_CTRL_C_TRANSITION), 179 1, 1000); 180 } 181 182 static int hellcreek_wait_fdb_ready(struct hellcreek *hellcreek) 183 { 184 u16 val; 185 186 return readx_poll_timeout_atomic(hellcreek_read_stat, hellcreek, 187 val, !(val & HR_SWSTAT_BUSY), 188 1, 1000); 189 } 190 191 static int hellcreek_detect(struct hellcreek *hellcreek) 192 { 193 u16 id, rel_low, rel_high, date_low, date_high, tgd_ver; 194 u8 tgd_maj, tgd_min; 195 u32 rel, date; 196 197 id = hellcreek_read(hellcreek, HR_MODID_C); 198 rel_low = hellcreek_read(hellcreek, HR_REL_L_C); 199 rel_high = hellcreek_read(hellcreek, HR_REL_H_C); 200 date_low = hellcreek_read(hellcreek, HR_BLD_L_C); 201 date_high = hellcreek_read(hellcreek, HR_BLD_H_C); 202 tgd_ver = hellcreek_read(hellcreek, TR_TGDVER); 203 204 if (id != hellcreek->pdata->module_id) 205 return -ENODEV; 206 207 rel = rel_low | (rel_high << 16); 208 date = date_low | (date_high << 16); 209 tgd_maj = (tgd_ver & TR_TGDVER_REV_MAJ_MASK) >> TR_TGDVER_REV_MAJ_SHIFT; 210 tgd_min = (tgd_ver & TR_TGDVER_REV_MIN_MASK) >> TR_TGDVER_REV_MIN_SHIFT; 211 212 dev_info(hellcreek->dev, "Module ID=%02x Release=%04x Date=%04x TGD Version=%02x.%02x\n", 213 id, rel, date, tgd_maj, tgd_min); 214 215 return 0; 216 } 217 218 static void hellcreek_feature_detect(struct hellcreek *hellcreek) 219 { 220 u16 features; 221 222 features = hellcreek_read(hellcreek, HR_FEABITS0); 223 224 /* Only detect the size of the FDB table. The size and current 225 * utilization can be queried via devlink. 226 */ 227 hellcreek->fdb_entries = ((features & HR_FEABITS0_FDBBINS_MASK) >> 228 HR_FEABITS0_FDBBINS_SHIFT) * 32; 229 } 230 231 static enum dsa_tag_protocol hellcreek_get_tag_protocol(struct dsa_switch *ds, 232 int port, 233 enum dsa_tag_protocol mp) 234 { 235 return DSA_TAG_PROTO_HELLCREEK; 236 } 237 238 static int hellcreek_port_enable(struct dsa_switch *ds, int port, 239 struct phy_device *phy) 240 { 241 struct hellcreek *hellcreek = ds->priv; 242 struct hellcreek_port *hellcreek_port; 243 u16 val; 244 245 hellcreek_port = &hellcreek->ports[port]; 246 247 dev_dbg(hellcreek->dev, "Enable port %d\n", port); 248 249 mutex_lock(&hellcreek->reg_lock); 250 251 hellcreek_select_port(hellcreek, port); 252 val = hellcreek_port->ptcfg; 253 val |= HR_PTCFG_ADMIN_EN; 254 hellcreek_write(hellcreek, val, HR_PTCFG); 255 hellcreek_port->ptcfg = val; 256 257 mutex_unlock(&hellcreek->reg_lock); 258 259 return 0; 260 } 261 262 static void hellcreek_port_disable(struct dsa_switch *ds, int port) 263 { 264 struct hellcreek *hellcreek = ds->priv; 265 struct hellcreek_port *hellcreek_port; 266 u16 val; 267 268 hellcreek_port = &hellcreek->ports[port]; 269 270 dev_dbg(hellcreek->dev, "Disable port %d\n", port); 271 272 mutex_lock(&hellcreek->reg_lock); 273 274 hellcreek_select_port(hellcreek, port); 275 val = hellcreek_port->ptcfg; 276 val &= ~HR_PTCFG_ADMIN_EN; 277 hellcreek_write(hellcreek, val, HR_PTCFG); 278 hellcreek_port->ptcfg = val; 279 280 mutex_unlock(&hellcreek->reg_lock); 281 } 282 283 static void hellcreek_get_strings(struct dsa_switch *ds, int port, 284 u32 stringset, uint8_t *data) 285 { 286 int i; 287 288 for (i = 0; i < ARRAY_SIZE(hellcreek_counter); ++i) { 289 const struct hellcreek_counter *counter = &hellcreek_counter[i]; 290 291 strlcpy(data + i * ETH_GSTRING_LEN, 292 counter->name, ETH_GSTRING_LEN); 293 } 294 } 295 296 static int hellcreek_get_sset_count(struct dsa_switch *ds, int port, int sset) 297 { 298 if (sset != ETH_SS_STATS) 299 return 0; 300 301 return ARRAY_SIZE(hellcreek_counter); 302 } 303 304 static void hellcreek_get_ethtool_stats(struct dsa_switch *ds, int port, 305 uint64_t *data) 306 { 307 struct hellcreek *hellcreek = ds->priv; 308 struct hellcreek_port *hellcreek_port; 309 int i; 310 311 hellcreek_port = &hellcreek->ports[port]; 312 313 for (i = 0; i < ARRAY_SIZE(hellcreek_counter); ++i) { 314 const struct hellcreek_counter *counter = &hellcreek_counter[i]; 315 u8 offset = counter->offset + port * 64; 316 u16 high, low; 317 u64 value; 318 319 mutex_lock(&hellcreek->reg_lock); 320 321 hellcreek_select_counter(hellcreek, offset); 322 323 /* The registers are locked internally by selecting the 324 * counter. So low and high can be read without reading high 325 * again. 326 */ 327 high = hellcreek_read(hellcreek, HR_CRDH); 328 low = hellcreek_read(hellcreek, HR_CRDL); 329 value = ((u64)high << 16) | low; 330 331 hellcreek_port->counter_values[i] += value; 332 data[i] = hellcreek_port->counter_values[i]; 333 334 mutex_unlock(&hellcreek->reg_lock); 335 } 336 } 337 338 static u16 hellcreek_private_vid(int port) 339 { 340 return VLAN_N_VID - port + 1; 341 } 342 343 static int hellcreek_vlan_prepare(struct dsa_switch *ds, int port, 344 const struct switchdev_obj_port_vlan *vlan, 345 struct netlink_ext_ack *extack) 346 { 347 struct hellcreek *hellcreek = ds->priv; 348 int i; 349 350 dev_dbg(hellcreek->dev, "VLAN prepare for port %d\n", port); 351 352 /* Restriction: Make sure that nobody uses the "private" VLANs. These 353 * VLANs are internally used by the driver to ensure port 354 * separation. Thus, they cannot be used by someone else. 355 */ 356 for (i = 0; i < hellcreek->pdata->num_ports; ++i) { 357 const u16 restricted_vid = hellcreek_private_vid(i); 358 359 if (!dsa_is_user_port(ds, i)) 360 continue; 361 362 if (vlan->vid == restricted_vid) { 363 NL_SET_ERR_MSG_MOD(extack, "VID restricted by driver"); 364 return -EBUSY; 365 } 366 } 367 368 return 0; 369 } 370 371 static void hellcreek_select_vlan_params(struct hellcreek *hellcreek, int port, 372 int *shift, int *mask) 373 { 374 switch (port) { 375 case 0: 376 *shift = HR_VIDMBRCFG_P0MBR_SHIFT; 377 *mask = HR_VIDMBRCFG_P0MBR_MASK; 378 break; 379 case 1: 380 *shift = HR_VIDMBRCFG_P1MBR_SHIFT; 381 *mask = HR_VIDMBRCFG_P1MBR_MASK; 382 break; 383 case 2: 384 *shift = HR_VIDMBRCFG_P2MBR_SHIFT; 385 *mask = HR_VIDMBRCFG_P2MBR_MASK; 386 break; 387 case 3: 388 *shift = HR_VIDMBRCFG_P3MBR_SHIFT; 389 *mask = HR_VIDMBRCFG_P3MBR_MASK; 390 break; 391 default: 392 *shift = *mask = 0; 393 dev_err(hellcreek->dev, "Unknown port %d selected!\n", port); 394 } 395 } 396 397 static void hellcreek_apply_vlan(struct hellcreek *hellcreek, int port, u16 vid, 398 bool pvid, bool untagged) 399 { 400 int shift, mask; 401 u16 val; 402 403 dev_dbg(hellcreek->dev, "Apply VLAN: port=%d vid=%u pvid=%d untagged=%d", 404 port, vid, pvid, untagged); 405 406 mutex_lock(&hellcreek->reg_lock); 407 408 hellcreek_select_port(hellcreek, port); 409 hellcreek_select_vlan(hellcreek, vid, pvid); 410 411 /* Setup port vlan membership */ 412 hellcreek_select_vlan_params(hellcreek, port, &shift, &mask); 413 val = hellcreek->vidmbrcfg[vid]; 414 val &= ~mask; 415 if (untagged) 416 val |= HELLCREEK_VLAN_UNTAGGED_MEMBER << shift; 417 else 418 val |= HELLCREEK_VLAN_TAGGED_MEMBER << shift; 419 420 hellcreek_write(hellcreek, val, HR_VIDMBRCFG); 421 hellcreek->vidmbrcfg[vid] = val; 422 423 mutex_unlock(&hellcreek->reg_lock); 424 } 425 426 static void hellcreek_unapply_vlan(struct hellcreek *hellcreek, int port, 427 u16 vid) 428 { 429 int shift, mask; 430 u16 val; 431 432 dev_dbg(hellcreek->dev, "Unapply VLAN: port=%d vid=%u\n", port, vid); 433 434 mutex_lock(&hellcreek->reg_lock); 435 436 hellcreek_select_vlan(hellcreek, vid, false); 437 438 /* Setup port vlan membership */ 439 hellcreek_select_vlan_params(hellcreek, port, &shift, &mask); 440 val = hellcreek->vidmbrcfg[vid]; 441 val &= ~mask; 442 val |= HELLCREEK_VLAN_NO_MEMBER << shift; 443 444 hellcreek_write(hellcreek, val, HR_VIDMBRCFG); 445 hellcreek->vidmbrcfg[vid] = val; 446 447 mutex_unlock(&hellcreek->reg_lock); 448 } 449 450 static int hellcreek_vlan_add(struct dsa_switch *ds, int port, 451 const struct switchdev_obj_port_vlan *vlan, 452 struct netlink_ext_ack *extack) 453 { 454 bool untagged = vlan->flags & BRIDGE_VLAN_INFO_UNTAGGED; 455 bool pvid = vlan->flags & BRIDGE_VLAN_INFO_PVID; 456 struct hellcreek *hellcreek = ds->priv; 457 int err; 458 459 err = hellcreek_vlan_prepare(ds, port, vlan, extack); 460 if (err) 461 return err; 462 463 dev_dbg(hellcreek->dev, "Add VLAN %d on port %d, %s, %s\n", 464 vlan->vid, port, untagged ? "untagged" : "tagged", 465 pvid ? "PVID" : "no PVID"); 466 467 hellcreek_apply_vlan(hellcreek, port, vlan->vid, pvid, untagged); 468 469 return 0; 470 } 471 472 static int hellcreek_vlan_del(struct dsa_switch *ds, int port, 473 const struct switchdev_obj_port_vlan *vlan) 474 { 475 struct hellcreek *hellcreek = ds->priv; 476 477 dev_dbg(hellcreek->dev, "Remove VLAN %d on port %d\n", vlan->vid, port); 478 479 hellcreek_unapply_vlan(hellcreek, port, vlan->vid); 480 481 return 0; 482 } 483 484 static void hellcreek_port_stp_state_set(struct dsa_switch *ds, int port, 485 u8 state) 486 { 487 struct hellcreek *hellcreek = ds->priv; 488 struct hellcreek_port *hellcreek_port; 489 const char *new_state; 490 u16 val; 491 492 mutex_lock(&hellcreek->reg_lock); 493 494 hellcreek_port = &hellcreek->ports[port]; 495 val = hellcreek_port->ptcfg; 496 497 switch (state) { 498 case BR_STATE_DISABLED: 499 new_state = "DISABLED"; 500 val |= HR_PTCFG_BLOCKED; 501 val &= ~HR_PTCFG_LEARNING_EN; 502 break; 503 case BR_STATE_BLOCKING: 504 new_state = "BLOCKING"; 505 val |= HR_PTCFG_BLOCKED; 506 val &= ~HR_PTCFG_LEARNING_EN; 507 break; 508 case BR_STATE_LISTENING: 509 new_state = "LISTENING"; 510 val |= HR_PTCFG_BLOCKED; 511 val &= ~HR_PTCFG_LEARNING_EN; 512 break; 513 case BR_STATE_LEARNING: 514 new_state = "LEARNING"; 515 val |= HR_PTCFG_BLOCKED; 516 val |= HR_PTCFG_LEARNING_EN; 517 break; 518 case BR_STATE_FORWARDING: 519 new_state = "FORWARDING"; 520 val &= ~HR_PTCFG_BLOCKED; 521 val |= HR_PTCFG_LEARNING_EN; 522 break; 523 default: 524 new_state = "UNKNOWN"; 525 } 526 527 hellcreek_select_port(hellcreek, port); 528 hellcreek_write(hellcreek, val, HR_PTCFG); 529 hellcreek_port->ptcfg = val; 530 531 mutex_unlock(&hellcreek->reg_lock); 532 533 dev_dbg(hellcreek->dev, "Configured STP state for port %d: %s\n", 534 port, new_state); 535 } 536 537 static void hellcreek_setup_ingressflt(struct hellcreek *hellcreek, int port, 538 bool enable) 539 { 540 struct hellcreek_port *hellcreek_port = &hellcreek->ports[port]; 541 u16 ptcfg; 542 543 mutex_lock(&hellcreek->reg_lock); 544 545 ptcfg = hellcreek_port->ptcfg; 546 547 if (enable) 548 ptcfg |= HR_PTCFG_INGRESSFLT; 549 else 550 ptcfg &= ~HR_PTCFG_INGRESSFLT; 551 552 hellcreek_select_port(hellcreek, port); 553 hellcreek_write(hellcreek, ptcfg, HR_PTCFG); 554 hellcreek_port->ptcfg = ptcfg; 555 556 mutex_unlock(&hellcreek->reg_lock); 557 } 558 559 static void hellcreek_setup_vlan_awareness(struct hellcreek *hellcreek, 560 bool enable) 561 { 562 u16 swcfg; 563 564 mutex_lock(&hellcreek->reg_lock); 565 566 swcfg = hellcreek->swcfg; 567 568 if (enable) 569 swcfg |= HR_SWCFG_VLAN_UNAWARE; 570 else 571 swcfg &= ~HR_SWCFG_VLAN_UNAWARE; 572 573 hellcreek_write(hellcreek, swcfg, HR_SWCFG); 574 575 mutex_unlock(&hellcreek->reg_lock); 576 } 577 578 /* Default setup for DSA: VLAN <X>: CPU and Port <X> egress untagged. */ 579 static void hellcreek_setup_vlan_membership(struct dsa_switch *ds, int port, 580 bool enabled) 581 { 582 const u16 vid = hellcreek_private_vid(port); 583 int upstream = dsa_upstream_port(ds, port); 584 struct hellcreek *hellcreek = ds->priv; 585 586 /* Apply vid to port as egress untagged and port vlan id */ 587 if (enabled) 588 hellcreek_apply_vlan(hellcreek, port, vid, true, true); 589 else 590 hellcreek_unapply_vlan(hellcreek, port, vid); 591 592 /* Apply vid to cpu port as well */ 593 if (enabled) 594 hellcreek_apply_vlan(hellcreek, upstream, vid, false, true); 595 else 596 hellcreek_unapply_vlan(hellcreek, upstream, vid); 597 } 598 599 static void hellcreek_port_set_ucast_flood(struct hellcreek *hellcreek, 600 int port, bool enable) 601 { 602 struct hellcreek_port *hellcreek_port; 603 u16 val; 604 605 hellcreek_port = &hellcreek->ports[port]; 606 607 dev_dbg(hellcreek->dev, "%s unicast flooding on port %d\n", 608 enable ? "Enable" : "Disable", port); 609 610 mutex_lock(&hellcreek->reg_lock); 611 612 hellcreek_select_port(hellcreek, port); 613 val = hellcreek_port->ptcfg; 614 if (enable) 615 val &= ~HR_PTCFG_UUC_FLT; 616 else 617 val |= HR_PTCFG_UUC_FLT; 618 hellcreek_write(hellcreek, val, HR_PTCFG); 619 hellcreek_port->ptcfg = val; 620 621 mutex_unlock(&hellcreek->reg_lock); 622 } 623 624 static void hellcreek_port_set_mcast_flood(struct hellcreek *hellcreek, 625 int port, bool enable) 626 { 627 struct hellcreek_port *hellcreek_port; 628 u16 val; 629 630 hellcreek_port = &hellcreek->ports[port]; 631 632 dev_dbg(hellcreek->dev, "%s multicast flooding on port %d\n", 633 enable ? "Enable" : "Disable", port); 634 635 mutex_lock(&hellcreek->reg_lock); 636 637 hellcreek_select_port(hellcreek, port); 638 val = hellcreek_port->ptcfg; 639 if (enable) 640 val &= ~HR_PTCFG_UMC_FLT; 641 else 642 val |= HR_PTCFG_UMC_FLT; 643 hellcreek_write(hellcreek, val, HR_PTCFG); 644 hellcreek_port->ptcfg = val; 645 646 mutex_unlock(&hellcreek->reg_lock); 647 } 648 649 static int hellcreek_pre_bridge_flags(struct dsa_switch *ds, int port, 650 struct switchdev_brport_flags flags, 651 struct netlink_ext_ack *extack) 652 { 653 if (flags.mask & ~(BR_FLOOD | BR_MCAST_FLOOD)) 654 return -EINVAL; 655 656 return 0; 657 } 658 659 static int hellcreek_bridge_flags(struct dsa_switch *ds, int port, 660 struct switchdev_brport_flags flags, 661 struct netlink_ext_ack *extack) 662 { 663 struct hellcreek *hellcreek = ds->priv; 664 665 if (flags.mask & BR_FLOOD) 666 hellcreek_port_set_ucast_flood(hellcreek, port, 667 !!(flags.val & BR_FLOOD)); 668 669 if (flags.mask & BR_MCAST_FLOOD) 670 hellcreek_port_set_mcast_flood(hellcreek, port, 671 !!(flags.val & BR_MCAST_FLOOD)); 672 673 return 0; 674 } 675 676 static int hellcreek_port_bridge_join(struct dsa_switch *ds, int port, 677 struct dsa_bridge bridge, 678 bool *tx_fwd_offload) 679 { 680 struct hellcreek *hellcreek = ds->priv; 681 682 dev_dbg(hellcreek->dev, "Port %d joins a bridge\n", port); 683 684 /* When joining a vlan_filtering bridge, keep the switch VLAN aware */ 685 if (!ds->vlan_filtering) 686 hellcreek_setup_vlan_awareness(hellcreek, false); 687 688 /* Drop private vlans */ 689 hellcreek_setup_vlan_membership(ds, port, false); 690 691 return 0; 692 } 693 694 static void hellcreek_port_bridge_leave(struct dsa_switch *ds, int port, 695 struct dsa_bridge bridge) 696 { 697 struct hellcreek *hellcreek = ds->priv; 698 699 dev_dbg(hellcreek->dev, "Port %d leaves a bridge\n", port); 700 701 /* Enable VLAN awareness */ 702 hellcreek_setup_vlan_awareness(hellcreek, true); 703 704 /* Enable private vlans */ 705 hellcreek_setup_vlan_membership(ds, port, true); 706 } 707 708 static int __hellcreek_fdb_add(struct hellcreek *hellcreek, 709 const struct hellcreek_fdb_entry *entry) 710 { 711 u16 meta = 0; 712 713 dev_dbg(hellcreek->dev, "Add static FDB entry: MAC=%pM, MASK=0x%02x, " 714 "OBT=%d, REPRIO_EN=%d, PRIO=%d\n", entry->mac, entry->portmask, 715 entry->is_obt, entry->reprio_en, entry->reprio_tc); 716 717 /* Add mac address */ 718 hellcreek_write(hellcreek, entry->mac[1] | (entry->mac[0] << 8), HR_FDBWDH); 719 hellcreek_write(hellcreek, entry->mac[3] | (entry->mac[2] << 8), HR_FDBWDM); 720 hellcreek_write(hellcreek, entry->mac[5] | (entry->mac[4] << 8), HR_FDBWDL); 721 722 /* Meta data */ 723 meta |= entry->portmask << HR_FDBWRM0_PORTMASK_SHIFT; 724 if (entry->is_obt) 725 meta |= HR_FDBWRM0_OBT; 726 if (entry->reprio_en) { 727 meta |= HR_FDBWRM0_REPRIO_EN; 728 meta |= entry->reprio_tc << HR_FDBWRM0_REPRIO_TC_SHIFT; 729 } 730 hellcreek_write(hellcreek, meta, HR_FDBWRM0); 731 732 /* Commit */ 733 hellcreek_write(hellcreek, 0x00, HR_FDBWRCMD); 734 735 /* Wait until done */ 736 return hellcreek_wait_fdb_ready(hellcreek); 737 } 738 739 static int __hellcreek_fdb_del(struct hellcreek *hellcreek, 740 const struct hellcreek_fdb_entry *entry) 741 { 742 dev_dbg(hellcreek->dev, "Delete FDB entry: MAC=%pM!\n", entry->mac); 743 744 /* Delete by matching idx */ 745 hellcreek_write(hellcreek, entry->idx | HR_FDBWRCMD_FDBDEL, HR_FDBWRCMD); 746 747 /* Wait until done */ 748 return hellcreek_wait_fdb_ready(hellcreek); 749 } 750 751 static void hellcreek_populate_fdb_entry(struct hellcreek *hellcreek, 752 struct hellcreek_fdb_entry *entry, 753 size_t idx) 754 { 755 unsigned char addr[ETH_ALEN]; 756 u16 meta, mac; 757 758 /* Read values */ 759 meta = hellcreek_read(hellcreek, HR_FDBMDRD); 760 mac = hellcreek_read(hellcreek, HR_FDBRDL); 761 addr[5] = mac & 0xff; 762 addr[4] = (mac & 0xff00) >> 8; 763 mac = hellcreek_read(hellcreek, HR_FDBRDM); 764 addr[3] = mac & 0xff; 765 addr[2] = (mac & 0xff00) >> 8; 766 mac = hellcreek_read(hellcreek, HR_FDBRDH); 767 addr[1] = mac & 0xff; 768 addr[0] = (mac & 0xff00) >> 8; 769 770 /* Populate @entry */ 771 memcpy(entry->mac, addr, sizeof(addr)); 772 entry->idx = idx; 773 entry->portmask = (meta & HR_FDBMDRD_PORTMASK_MASK) >> 774 HR_FDBMDRD_PORTMASK_SHIFT; 775 entry->age = (meta & HR_FDBMDRD_AGE_MASK) >> 776 HR_FDBMDRD_AGE_SHIFT; 777 entry->is_obt = !!(meta & HR_FDBMDRD_OBT); 778 entry->pass_blocked = !!(meta & HR_FDBMDRD_PASS_BLOCKED); 779 entry->is_static = !!(meta & HR_FDBMDRD_STATIC); 780 entry->reprio_tc = (meta & HR_FDBMDRD_REPRIO_TC_MASK) >> 781 HR_FDBMDRD_REPRIO_TC_SHIFT; 782 entry->reprio_en = !!(meta & HR_FDBMDRD_REPRIO_EN); 783 } 784 785 /* Retrieve the index of a FDB entry by mac address. Currently we search through 786 * the complete table in hardware. If that's too slow, we might have to cache 787 * the complete FDB table in software. 788 */ 789 static int hellcreek_fdb_get(struct hellcreek *hellcreek, 790 const unsigned char *dest, 791 struct hellcreek_fdb_entry *entry) 792 { 793 size_t i; 794 795 /* Set read pointer to zero: The read of HR_FDBMAX (read-only register) 796 * should reset the internal pointer. But, that doesn't work. The vendor 797 * suggested a subsequent write as workaround. Same for HR_FDBRDH below. 798 */ 799 hellcreek_read(hellcreek, HR_FDBMAX); 800 hellcreek_write(hellcreek, 0x00, HR_FDBMAX); 801 802 /* We have to read the complete table, because the switch/driver might 803 * enter new entries anywhere. 804 */ 805 for (i = 0; i < hellcreek->fdb_entries; ++i) { 806 struct hellcreek_fdb_entry tmp = { 0 }; 807 808 /* Read entry */ 809 hellcreek_populate_fdb_entry(hellcreek, &tmp, i); 810 811 /* Force next entry */ 812 hellcreek_write(hellcreek, 0x00, HR_FDBRDH); 813 814 if (memcmp(tmp.mac, dest, ETH_ALEN)) 815 continue; 816 817 /* Match found */ 818 memcpy(entry, &tmp, sizeof(*entry)); 819 820 return 0; 821 } 822 823 return -ENOENT; 824 } 825 826 static int hellcreek_fdb_add(struct dsa_switch *ds, int port, 827 const unsigned char *addr, u16 vid) 828 { 829 struct hellcreek_fdb_entry entry = { 0 }; 830 struct hellcreek *hellcreek = ds->priv; 831 int ret; 832 833 dev_dbg(hellcreek->dev, "Add FDB entry for MAC=%pM\n", addr); 834 835 mutex_lock(&hellcreek->reg_lock); 836 837 ret = hellcreek_fdb_get(hellcreek, addr, &entry); 838 if (ret) { 839 /* Not found */ 840 memcpy(entry.mac, addr, sizeof(entry.mac)); 841 entry.portmask = BIT(port); 842 843 ret = __hellcreek_fdb_add(hellcreek, &entry); 844 if (ret) { 845 dev_err(hellcreek->dev, "Failed to add FDB entry!\n"); 846 goto out; 847 } 848 } else { 849 /* Found */ 850 ret = __hellcreek_fdb_del(hellcreek, &entry); 851 if (ret) { 852 dev_err(hellcreek->dev, "Failed to delete FDB entry!\n"); 853 goto out; 854 } 855 856 entry.portmask |= BIT(port); 857 858 ret = __hellcreek_fdb_add(hellcreek, &entry); 859 if (ret) { 860 dev_err(hellcreek->dev, "Failed to add FDB entry!\n"); 861 goto out; 862 } 863 } 864 865 out: 866 mutex_unlock(&hellcreek->reg_lock); 867 868 return ret; 869 } 870 871 static int hellcreek_fdb_del(struct dsa_switch *ds, int port, 872 const unsigned char *addr, u16 vid) 873 { 874 struct hellcreek_fdb_entry entry = { 0 }; 875 struct hellcreek *hellcreek = ds->priv; 876 int ret; 877 878 dev_dbg(hellcreek->dev, "Delete FDB entry for MAC=%pM\n", addr); 879 880 mutex_lock(&hellcreek->reg_lock); 881 882 ret = hellcreek_fdb_get(hellcreek, addr, &entry); 883 if (ret) { 884 /* Not found */ 885 dev_err(hellcreek->dev, "FDB entry for deletion not found!\n"); 886 } else { 887 /* Found */ 888 ret = __hellcreek_fdb_del(hellcreek, &entry); 889 if (ret) { 890 dev_err(hellcreek->dev, "Failed to delete FDB entry!\n"); 891 goto out; 892 } 893 894 entry.portmask &= ~BIT(port); 895 896 if (entry.portmask != 0x00) { 897 ret = __hellcreek_fdb_add(hellcreek, &entry); 898 if (ret) { 899 dev_err(hellcreek->dev, "Failed to add FDB entry!\n"); 900 goto out; 901 } 902 } 903 } 904 905 out: 906 mutex_unlock(&hellcreek->reg_lock); 907 908 return ret; 909 } 910 911 static int hellcreek_fdb_dump(struct dsa_switch *ds, int port, 912 dsa_fdb_dump_cb_t *cb, void *data) 913 { 914 struct hellcreek *hellcreek = ds->priv; 915 u16 entries; 916 int ret = 0; 917 size_t i; 918 919 mutex_lock(&hellcreek->reg_lock); 920 921 /* Set read pointer to zero: The read of HR_FDBMAX (read-only register) 922 * should reset the internal pointer. But, that doesn't work. The vendor 923 * suggested a subsequent write as workaround. Same for HR_FDBRDH below. 924 */ 925 entries = hellcreek_read(hellcreek, HR_FDBMAX); 926 hellcreek_write(hellcreek, 0x00, HR_FDBMAX); 927 928 dev_dbg(hellcreek->dev, "FDB dump for port %d, entries=%d!\n", port, entries); 929 930 /* Read table */ 931 for (i = 0; i < hellcreek->fdb_entries; ++i) { 932 struct hellcreek_fdb_entry entry = { 0 }; 933 934 /* Read entry */ 935 hellcreek_populate_fdb_entry(hellcreek, &entry, i); 936 937 /* Force next entry */ 938 hellcreek_write(hellcreek, 0x00, HR_FDBRDH); 939 940 /* Check valid */ 941 if (is_zero_ether_addr(entry.mac)) 942 continue; 943 944 /* Check port mask */ 945 if (!(entry.portmask & BIT(port))) 946 continue; 947 948 ret = cb(entry.mac, 0, entry.is_static, data); 949 if (ret) 950 break; 951 } 952 953 mutex_unlock(&hellcreek->reg_lock); 954 955 return ret; 956 } 957 958 static int hellcreek_vlan_filtering(struct dsa_switch *ds, int port, 959 bool vlan_filtering, 960 struct netlink_ext_ack *extack) 961 { 962 struct hellcreek *hellcreek = ds->priv; 963 964 dev_dbg(hellcreek->dev, "%s VLAN filtering on port %d\n", 965 vlan_filtering ? "Enable" : "Disable", port); 966 967 /* Configure port to drop packages with not known vids */ 968 hellcreek_setup_ingressflt(hellcreek, port, vlan_filtering); 969 970 /* Enable VLAN awareness on the switch. This save due to 971 * ds->vlan_filtering_is_global. 972 */ 973 hellcreek_setup_vlan_awareness(hellcreek, vlan_filtering); 974 975 return 0; 976 } 977 978 static int hellcreek_enable_ip_core(struct hellcreek *hellcreek) 979 { 980 int ret; 981 u16 val; 982 983 mutex_lock(&hellcreek->reg_lock); 984 985 val = hellcreek_read(hellcreek, HR_CTRL_C); 986 val |= HR_CTRL_C_ENABLE; 987 hellcreek_write(hellcreek, val, HR_CTRL_C); 988 ret = hellcreek_wait_until_transitioned(hellcreek); 989 990 mutex_unlock(&hellcreek->reg_lock); 991 992 return ret; 993 } 994 995 static void hellcreek_setup_cpu_and_tunnel_port(struct hellcreek *hellcreek) 996 { 997 struct hellcreek_port *tunnel_port = &hellcreek->ports[TUNNEL_PORT]; 998 struct hellcreek_port *cpu_port = &hellcreek->ports[CPU_PORT]; 999 u16 ptcfg = 0; 1000 1001 ptcfg |= HR_PTCFG_LEARNING_EN | HR_PTCFG_ADMIN_EN; 1002 1003 mutex_lock(&hellcreek->reg_lock); 1004 1005 hellcreek_select_port(hellcreek, CPU_PORT); 1006 hellcreek_write(hellcreek, ptcfg, HR_PTCFG); 1007 1008 hellcreek_select_port(hellcreek, TUNNEL_PORT); 1009 hellcreek_write(hellcreek, ptcfg, HR_PTCFG); 1010 1011 cpu_port->ptcfg = ptcfg; 1012 tunnel_port->ptcfg = ptcfg; 1013 1014 mutex_unlock(&hellcreek->reg_lock); 1015 } 1016 1017 static void hellcreek_setup_tc_identity_mapping(struct hellcreek *hellcreek) 1018 { 1019 int i; 1020 1021 /* The switch has multiple egress queues per port. The queue is selected 1022 * via the PCP field in the VLAN header. The switch internally deals 1023 * with traffic classes instead of PCP values and this mapping is 1024 * configurable. 1025 * 1026 * The default mapping is (PCP - TC): 1027 * 7 - 7 1028 * 6 - 6 1029 * 5 - 5 1030 * 4 - 4 1031 * 3 - 3 1032 * 2 - 1 1033 * 1 - 0 1034 * 0 - 2 1035 * 1036 * The default should be an identity mapping. 1037 */ 1038 1039 for (i = 0; i < 8; ++i) { 1040 mutex_lock(&hellcreek->reg_lock); 1041 1042 hellcreek_select_prio(hellcreek, i); 1043 hellcreek_write(hellcreek, 1044 i << HR_PRTCCFG_PCP_TC_MAP_SHIFT, 1045 HR_PRTCCFG); 1046 1047 mutex_unlock(&hellcreek->reg_lock); 1048 } 1049 } 1050 1051 static int hellcreek_setup_fdb(struct hellcreek *hellcreek) 1052 { 1053 static struct hellcreek_fdb_entry ptp = { 1054 /* MAC: 01-1B-19-00-00-00 */ 1055 .mac = { 0x01, 0x1b, 0x19, 0x00, 0x00, 0x00 }, 1056 .portmask = 0x03, /* Management ports */ 1057 .age = 0, 1058 .is_obt = 0, 1059 .pass_blocked = 0, 1060 .is_static = 1, 1061 .reprio_tc = 6, /* TC: 6 as per IEEE 802.1AS */ 1062 .reprio_en = 1, 1063 }; 1064 static struct hellcreek_fdb_entry p2p = { 1065 /* MAC: 01-80-C2-00-00-0E */ 1066 .mac = { 0x01, 0x80, 0xc2, 0x00, 0x00, 0x0e }, 1067 .portmask = 0x03, /* Management ports */ 1068 .age = 0, 1069 .is_obt = 0, 1070 .pass_blocked = 0, 1071 .is_static = 1, 1072 .reprio_tc = 6, /* TC: 6 as per IEEE 802.1AS */ 1073 .reprio_en = 1, 1074 }; 1075 int ret; 1076 1077 mutex_lock(&hellcreek->reg_lock); 1078 ret = __hellcreek_fdb_add(hellcreek, &ptp); 1079 if (ret) 1080 goto out; 1081 ret = __hellcreek_fdb_add(hellcreek, &p2p); 1082 out: 1083 mutex_unlock(&hellcreek->reg_lock); 1084 1085 return ret; 1086 } 1087 1088 static int hellcreek_devlink_info_get(struct dsa_switch *ds, 1089 struct devlink_info_req *req, 1090 struct netlink_ext_ack *extack) 1091 { 1092 struct hellcreek *hellcreek = ds->priv; 1093 int ret; 1094 1095 ret = devlink_info_driver_name_put(req, "hellcreek"); 1096 if (ret) 1097 return ret; 1098 1099 return devlink_info_version_fixed_put(req, 1100 DEVLINK_INFO_VERSION_GENERIC_ASIC_ID, 1101 hellcreek->pdata->name); 1102 } 1103 1104 static u64 hellcreek_devlink_vlan_table_get(void *priv) 1105 { 1106 struct hellcreek *hellcreek = priv; 1107 u64 count = 0; 1108 int i; 1109 1110 mutex_lock(&hellcreek->reg_lock); 1111 for (i = 0; i < VLAN_N_VID; ++i) 1112 if (hellcreek->vidmbrcfg[i]) 1113 count++; 1114 mutex_unlock(&hellcreek->reg_lock); 1115 1116 return count; 1117 } 1118 1119 static u64 hellcreek_devlink_fdb_table_get(void *priv) 1120 { 1121 struct hellcreek *hellcreek = priv; 1122 u64 count = 0; 1123 1124 /* Reading this register has side effects. Synchronize against the other 1125 * FDB operations. 1126 */ 1127 mutex_lock(&hellcreek->reg_lock); 1128 count = hellcreek_read(hellcreek, HR_FDBMAX); 1129 mutex_unlock(&hellcreek->reg_lock); 1130 1131 return count; 1132 } 1133 1134 static int hellcreek_setup_devlink_resources(struct dsa_switch *ds) 1135 { 1136 struct devlink_resource_size_params size_vlan_params; 1137 struct devlink_resource_size_params size_fdb_params; 1138 struct hellcreek *hellcreek = ds->priv; 1139 int err; 1140 1141 devlink_resource_size_params_init(&size_vlan_params, VLAN_N_VID, 1142 VLAN_N_VID, 1143 1, DEVLINK_RESOURCE_UNIT_ENTRY); 1144 1145 devlink_resource_size_params_init(&size_fdb_params, 1146 hellcreek->fdb_entries, 1147 hellcreek->fdb_entries, 1148 1, DEVLINK_RESOURCE_UNIT_ENTRY); 1149 1150 err = dsa_devlink_resource_register(ds, "VLAN", VLAN_N_VID, 1151 HELLCREEK_DEVLINK_PARAM_ID_VLAN_TABLE, 1152 DEVLINK_RESOURCE_ID_PARENT_TOP, 1153 &size_vlan_params); 1154 if (err) 1155 goto out; 1156 1157 err = dsa_devlink_resource_register(ds, "FDB", hellcreek->fdb_entries, 1158 HELLCREEK_DEVLINK_PARAM_ID_FDB_TABLE, 1159 DEVLINK_RESOURCE_ID_PARENT_TOP, 1160 &size_fdb_params); 1161 if (err) 1162 goto out; 1163 1164 dsa_devlink_resource_occ_get_register(ds, 1165 HELLCREEK_DEVLINK_PARAM_ID_VLAN_TABLE, 1166 hellcreek_devlink_vlan_table_get, 1167 hellcreek); 1168 1169 dsa_devlink_resource_occ_get_register(ds, 1170 HELLCREEK_DEVLINK_PARAM_ID_FDB_TABLE, 1171 hellcreek_devlink_fdb_table_get, 1172 hellcreek); 1173 1174 return 0; 1175 1176 out: 1177 dsa_devlink_resources_unregister(ds); 1178 1179 return err; 1180 } 1181 1182 static int hellcreek_devlink_region_vlan_snapshot(struct devlink *dl, 1183 const struct devlink_region_ops *ops, 1184 struct netlink_ext_ack *extack, 1185 u8 **data) 1186 { 1187 struct hellcreek_devlink_vlan_entry *table, *entry; 1188 struct dsa_switch *ds = dsa_devlink_to_ds(dl); 1189 struct hellcreek *hellcreek = ds->priv; 1190 int i; 1191 1192 table = kcalloc(VLAN_N_VID, sizeof(*entry), GFP_KERNEL); 1193 if (!table) 1194 return -ENOMEM; 1195 1196 entry = table; 1197 1198 mutex_lock(&hellcreek->reg_lock); 1199 for (i = 0; i < VLAN_N_VID; ++i, ++entry) { 1200 entry->member = hellcreek->vidmbrcfg[i]; 1201 entry->vid = i; 1202 } 1203 mutex_unlock(&hellcreek->reg_lock); 1204 1205 *data = (u8 *)table; 1206 1207 return 0; 1208 } 1209 1210 static int hellcreek_devlink_region_fdb_snapshot(struct devlink *dl, 1211 const struct devlink_region_ops *ops, 1212 struct netlink_ext_ack *extack, 1213 u8 **data) 1214 { 1215 struct dsa_switch *ds = dsa_devlink_to_ds(dl); 1216 struct hellcreek_fdb_entry *table, *entry; 1217 struct hellcreek *hellcreek = ds->priv; 1218 size_t i; 1219 1220 table = kcalloc(hellcreek->fdb_entries, sizeof(*entry), GFP_KERNEL); 1221 if (!table) 1222 return -ENOMEM; 1223 1224 entry = table; 1225 1226 mutex_lock(&hellcreek->reg_lock); 1227 1228 /* Start table read */ 1229 hellcreek_read(hellcreek, HR_FDBMAX); 1230 hellcreek_write(hellcreek, 0x00, HR_FDBMAX); 1231 1232 for (i = 0; i < hellcreek->fdb_entries; ++i, ++entry) { 1233 /* Read current entry */ 1234 hellcreek_populate_fdb_entry(hellcreek, entry, i); 1235 1236 /* Advance read pointer */ 1237 hellcreek_write(hellcreek, 0x00, HR_FDBRDH); 1238 } 1239 1240 mutex_unlock(&hellcreek->reg_lock); 1241 1242 *data = (u8 *)table; 1243 1244 return 0; 1245 } 1246 1247 static struct devlink_region_ops hellcreek_region_vlan_ops = { 1248 .name = "vlan", 1249 .snapshot = hellcreek_devlink_region_vlan_snapshot, 1250 .destructor = kfree, 1251 }; 1252 1253 static struct devlink_region_ops hellcreek_region_fdb_ops = { 1254 .name = "fdb", 1255 .snapshot = hellcreek_devlink_region_fdb_snapshot, 1256 .destructor = kfree, 1257 }; 1258 1259 static int hellcreek_setup_devlink_regions(struct dsa_switch *ds) 1260 { 1261 struct hellcreek *hellcreek = ds->priv; 1262 struct devlink_region_ops *ops; 1263 struct devlink_region *region; 1264 u64 size; 1265 int ret; 1266 1267 /* VLAN table */ 1268 size = VLAN_N_VID * sizeof(struct hellcreek_devlink_vlan_entry); 1269 ops = &hellcreek_region_vlan_ops; 1270 1271 region = dsa_devlink_region_create(ds, ops, 1, size); 1272 if (IS_ERR(region)) 1273 return PTR_ERR(region); 1274 1275 hellcreek->vlan_region = region; 1276 1277 /* FDB table */ 1278 size = hellcreek->fdb_entries * sizeof(struct hellcreek_fdb_entry); 1279 ops = &hellcreek_region_fdb_ops; 1280 1281 region = dsa_devlink_region_create(ds, ops, 1, size); 1282 if (IS_ERR(region)) { 1283 ret = PTR_ERR(region); 1284 goto err_fdb; 1285 } 1286 1287 hellcreek->fdb_region = region; 1288 1289 return 0; 1290 1291 err_fdb: 1292 dsa_devlink_region_destroy(hellcreek->vlan_region); 1293 1294 return ret; 1295 } 1296 1297 static void hellcreek_teardown_devlink_regions(struct dsa_switch *ds) 1298 { 1299 struct hellcreek *hellcreek = ds->priv; 1300 1301 dsa_devlink_region_destroy(hellcreek->fdb_region); 1302 dsa_devlink_region_destroy(hellcreek->vlan_region); 1303 } 1304 1305 static int hellcreek_setup(struct dsa_switch *ds) 1306 { 1307 struct hellcreek *hellcreek = ds->priv; 1308 u16 swcfg = 0; 1309 int ret, i; 1310 1311 dev_dbg(hellcreek->dev, "Set up the switch\n"); 1312 1313 /* Let's go */ 1314 ret = hellcreek_enable_ip_core(hellcreek); 1315 if (ret) { 1316 dev_err(hellcreek->dev, "Failed to enable IP core!\n"); 1317 return ret; 1318 } 1319 1320 /* Enable CPU/Tunnel ports */ 1321 hellcreek_setup_cpu_and_tunnel_port(hellcreek); 1322 1323 /* Switch config: Keep defaults, enable FDB aging and learning and tag 1324 * each frame from/to cpu port for DSA tagging. Also enable the length 1325 * aware shaping mode. This eliminates the need for Qbv guard bands. 1326 */ 1327 swcfg |= HR_SWCFG_FDBAGE_EN | 1328 HR_SWCFG_FDBLRN_EN | 1329 HR_SWCFG_ALWAYS_OBT | 1330 (HR_SWCFG_LAS_ON << HR_SWCFG_LAS_MODE_SHIFT); 1331 hellcreek->swcfg = swcfg; 1332 hellcreek_write(hellcreek, swcfg, HR_SWCFG); 1333 1334 /* Initial vlan membership to reflect port separation */ 1335 for (i = 0; i < ds->num_ports; ++i) { 1336 if (!dsa_is_user_port(ds, i)) 1337 continue; 1338 1339 hellcreek_setup_vlan_membership(ds, i, true); 1340 } 1341 1342 /* Configure PCP <-> TC mapping */ 1343 hellcreek_setup_tc_identity_mapping(hellcreek); 1344 1345 /* The VLAN awareness is a global switch setting. Therefore, mixed vlan 1346 * filtering setups are not supported. 1347 */ 1348 ds->vlan_filtering_is_global = true; 1349 ds->needs_standalone_vlan_filtering = true; 1350 1351 /* Intercept _all_ PTP multicast traffic */ 1352 ret = hellcreek_setup_fdb(hellcreek); 1353 if (ret) { 1354 dev_err(hellcreek->dev, 1355 "Failed to insert static PTP FDB entries\n"); 1356 return ret; 1357 } 1358 1359 /* Register devlink resources with DSA */ 1360 ret = hellcreek_setup_devlink_resources(ds); 1361 if (ret) { 1362 dev_err(hellcreek->dev, 1363 "Failed to setup devlink resources!\n"); 1364 return ret; 1365 } 1366 1367 ret = hellcreek_setup_devlink_regions(ds); 1368 if (ret) { 1369 dev_err(hellcreek->dev, 1370 "Failed to setup devlink regions!\n"); 1371 goto err_regions; 1372 } 1373 1374 return 0; 1375 1376 err_regions: 1377 dsa_devlink_resources_unregister(ds); 1378 1379 return ret; 1380 } 1381 1382 static void hellcreek_teardown(struct dsa_switch *ds) 1383 { 1384 hellcreek_teardown_devlink_regions(ds); 1385 dsa_devlink_resources_unregister(ds); 1386 } 1387 1388 static void hellcreek_phylink_get_caps(struct dsa_switch *ds, int port, 1389 struct phylink_config *config) 1390 { 1391 struct hellcreek *hellcreek = ds->priv; 1392 1393 __set_bit(PHY_INTERFACE_MODE_MII, config->supported_interfaces); 1394 __set_bit(PHY_INTERFACE_MODE_RGMII, config->supported_interfaces); 1395 1396 /* Include GMII - the hardware does not support this interface 1397 * mode, but it's the default interface mode for phylib, so we 1398 * need it for compatibility with existing DT. 1399 */ 1400 __set_bit(PHY_INTERFACE_MODE_GMII, config->supported_interfaces); 1401 1402 /* The MAC settings are a hardware configuration option and cannot be 1403 * changed at run time or by strapping. Therefore the attached PHYs 1404 * should be programmed to only advertise settings which are supported 1405 * by the hardware. 1406 */ 1407 if (hellcreek->pdata->is_100_mbits) 1408 config->mac_capabilities = MAC_100FD; 1409 else 1410 config->mac_capabilities = MAC_1000FD; 1411 } 1412 1413 static int 1414 hellcreek_port_prechangeupper(struct dsa_switch *ds, int port, 1415 struct netdev_notifier_changeupper_info *info) 1416 { 1417 struct hellcreek *hellcreek = ds->priv; 1418 bool used = true; 1419 int ret = -EBUSY; 1420 u16 vid; 1421 int i; 1422 1423 dev_dbg(hellcreek->dev, "Pre change upper for port %d\n", port); 1424 1425 /* 1426 * Deny VLAN devices on top of lan ports with the same VLAN ids, because 1427 * it breaks the port separation due to the private VLANs. Example: 1428 * 1429 * lan0.100 *and* lan1.100 cannot be used in parallel. However, lan0.99 1430 * and lan1.100 works. 1431 */ 1432 1433 if (!is_vlan_dev(info->upper_dev)) 1434 return 0; 1435 1436 vid = vlan_dev_vlan_id(info->upper_dev); 1437 1438 /* For all ports, check bitmaps */ 1439 mutex_lock(&hellcreek->vlan_lock); 1440 for (i = 0; i < hellcreek->pdata->num_ports; ++i) { 1441 if (!dsa_is_user_port(ds, i)) 1442 continue; 1443 1444 if (port == i) 1445 continue; 1446 1447 used = used && test_bit(vid, hellcreek->ports[i].vlan_dev_bitmap); 1448 } 1449 1450 if (used) 1451 goto out; 1452 1453 /* Update bitmap */ 1454 set_bit(vid, hellcreek->ports[port].vlan_dev_bitmap); 1455 1456 ret = 0; 1457 1458 out: 1459 mutex_unlock(&hellcreek->vlan_lock); 1460 1461 return ret; 1462 } 1463 1464 static void hellcreek_setup_gcl(struct hellcreek *hellcreek, int port, 1465 const struct tc_taprio_qopt_offload *schedule) 1466 { 1467 const struct tc_taprio_sched_entry *cur, *initial, *next; 1468 size_t i; 1469 1470 cur = initial = &schedule->entries[0]; 1471 next = cur + 1; 1472 1473 for (i = 1; i <= schedule->num_entries; ++i) { 1474 u16 data; 1475 u8 gates; 1476 1477 if (i == schedule->num_entries) 1478 gates = initial->gate_mask ^ 1479 cur->gate_mask; 1480 else 1481 gates = next->gate_mask ^ 1482 cur->gate_mask; 1483 1484 data = gates; 1485 1486 if (i == schedule->num_entries) 1487 data |= TR_GCLDAT_GCLWRLAST; 1488 1489 /* Gates states */ 1490 hellcreek_write(hellcreek, data, TR_GCLDAT); 1491 1492 /* Time interval */ 1493 hellcreek_write(hellcreek, 1494 cur->interval & 0x0000ffff, 1495 TR_GCLTIL); 1496 hellcreek_write(hellcreek, 1497 (cur->interval & 0xffff0000) >> 16, 1498 TR_GCLTIH); 1499 1500 /* Commit entry */ 1501 data = ((i - 1) << TR_GCLCMD_GCLWRADR_SHIFT) | 1502 (initial->gate_mask << 1503 TR_GCLCMD_INIT_GATE_STATES_SHIFT); 1504 hellcreek_write(hellcreek, data, TR_GCLCMD); 1505 1506 cur++; 1507 next++; 1508 } 1509 } 1510 1511 static void hellcreek_set_cycle_time(struct hellcreek *hellcreek, 1512 const struct tc_taprio_qopt_offload *schedule) 1513 { 1514 u32 cycle_time = schedule->cycle_time; 1515 1516 hellcreek_write(hellcreek, cycle_time & 0x0000ffff, TR_CTWRL); 1517 hellcreek_write(hellcreek, (cycle_time & 0xffff0000) >> 16, TR_CTWRH); 1518 } 1519 1520 static void hellcreek_switch_schedule(struct hellcreek *hellcreek, 1521 ktime_t start_time) 1522 { 1523 struct timespec64 ts = ktime_to_timespec64(start_time); 1524 1525 /* Start schedule at this point of time */ 1526 hellcreek_write(hellcreek, ts.tv_nsec & 0x0000ffff, TR_ESTWRL); 1527 hellcreek_write(hellcreek, (ts.tv_nsec & 0xffff0000) >> 16, TR_ESTWRH); 1528 1529 /* Arm timer, set seconds and switch schedule */ 1530 hellcreek_write(hellcreek, TR_ESTCMD_ESTARM | TR_ESTCMD_ESTSWCFG | 1531 ((ts.tv_sec & TR_ESTCMD_ESTSEC_MASK) << 1532 TR_ESTCMD_ESTSEC_SHIFT), TR_ESTCMD); 1533 } 1534 1535 static bool hellcreek_schedule_startable(struct hellcreek *hellcreek, int port) 1536 { 1537 struct hellcreek_port *hellcreek_port = &hellcreek->ports[port]; 1538 s64 base_time_ns, current_ns; 1539 1540 /* The switch allows a schedule to be started only eight seconds within 1541 * the future. Therefore, check the current PTP time if the schedule is 1542 * startable or not. 1543 */ 1544 1545 /* Use the "cached" time. That should be alright, as it's updated quite 1546 * frequently in the PTP code. 1547 */ 1548 mutex_lock(&hellcreek->ptp_lock); 1549 current_ns = hellcreek->seconds * NSEC_PER_SEC + hellcreek->last_ts; 1550 mutex_unlock(&hellcreek->ptp_lock); 1551 1552 /* Calculate difference to admin base time */ 1553 base_time_ns = ktime_to_ns(hellcreek_port->current_schedule->base_time); 1554 1555 return base_time_ns - current_ns < (s64)4 * NSEC_PER_SEC; 1556 } 1557 1558 static void hellcreek_start_schedule(struct hellcreek *hellcreek, int port) 1559 { 1560 struct hellcreek_port *hellcreek_port = &hellcreek->ports[port]; 1561 ktime_t base_time, current_time; 1562 s64 current_ns; 1563 u32 cycle_time; 1564 1565 /* First select port */ 1566 hellcreek_select_tgd(hellcreek, port); 1567 1568 /* Forward base time into the future if needed */ 1569 mutex_lock(&hellcreek->ptp_lock); 1570 current_ns = hellcreek->seconds * NSEC_PER_SEC + hellcreek->last_ts; 1571 mutex_unlock(&hellcreek->ptp_lock); 1572 1573 current_time = ns_to_ktime(current_ns); 1574 base_time = hellcreek_port->current_schedule->base_time; 1575 cycle_time = hellcreek_port->current_schedule->cycle_time; 1576 1577 if (ktime_compare(current_time, base_time) > 0) { 1578 s64 n; 1579 1580 n = div64_s64(ktime_sub_ns(current_time, base_time), 1581 cycle_time); 1582 base_time = ktime_add_ns(base_time, (n + 1) * cycle_time); 1583 } 1584 1585 /* Set admin base time and switch schedule */ 1586 hellcreek_switch_schedule(hellcreek, base_time); 1587 1588 taprio_offload_free(hellcreek_port->current_schedule); 1589 hellcreek_port->current_schedule = NULL; 1590 1591 dev_dbg(hellcreek->dev, "Armed EST timer for port %d\n", 1592 hellcreek_port->port); 1593 } 1594 1595 static void hellcreek_check_schedule(struct work_struct *work) 1596 { 1597 struct delayed_work *dw = to_delayed_work(work); 1598 struct hellcreek_port *hellcreek_port; 1599 struct hellcreek *hellcreek; 1600 bool startable; 1601 1602 hellcreek_port = dw_to_hellcreek_port(dw); 1603 hellcreek = hellcreek_port->hellcreek; 1604 1605 mutex_lock(&hellcreek->reg_lock); 1606 1607 /* Check starting time */ 1608 startable = hellcreek_schedule_startable(hellcreek, 1609 hellcreek_port->port); 1610 if (startable) { 1611 hellcreek_start_schedule(hellcreek, hellcreek_port->port); 1612 mutex_unlock(&hellcreek->reg_lock); 1613 return; 1614 } 1615 1616 mutex_unlock(&hellcreek->reg_lock); 1617 1618 /* Reschedule */ 1619 schedule_delayed_work(&hellcreek_port->schedule_work, 1620 HELLCREEK_SCHEDULE_PERIOD); 1621 } 1622 1623 static int hellcreek_port_set_schedule(struct dsa_switch *ds, int port, 1624 struct tc_taprio_qopt_offload *taprio) 1625 { 1626 struct hellcreek *hellcreek = ds->priv; 1627 struct hellcreek_port *hellcreek_port; 1628 bool startable; 1629 u16 ctrl; 1630 1631 hellcreek_port = &hellcreek->ports[port]; 1632 1633 dev_dbg(hellcreek->dev, "Configure traffic schedule on port %d\n", 1634 port); 1635 1636 /* First cancel delayed work */ 1637 cancel_delayed_work_sync(&hellcreek_port->schedule_work); 1638 1639 mutex_lock(&hellcreek->reg_lock); 1640 1641 if (hellcreek_port->current_schedule) { 1642 taprio_offload_free(hellcreek_port->current_schedule); 1643 hellcreek_port->current_schedule = NULL; 1644 } 1645 hellcreek_port->current_schedule = taprio_offload_get(taprio); 1646 1647 /* Then select port */ 1648 hellcreek_select_tgd(hellcreek, port); 1649 1650 /* Enable gating and keep defaults */ 1651 ctrl = (0xff << TR_TGDCTRL_ADMINGATESTATES_SHIFT) | TR_TGDCTRL_GATE_EN; 1652 hellcreek_write(hellcreek, ctrl, TR_TGDCTRL); 1653 1654 /* Cancel pending schedule */ 1655 hellcreek_write(hellcreek, 0x00, TR_ESTCMD); 1656 1657 /* Setup a new schedule */ 1658 hellcreek_setup_gcl(hellcreek, port, hellcreek_port->current_schedule); 1659 1660 /* Configure cycle time */ 1661 hellcreek_set_cycle_time(hellcreek, hellcreek_port->current_schedule); 1662 1663 /* Check starting time */ 1664 startable = hellcreek_schedule_startable(hellcreek, port); 1665 if (startable) { 1666 hellcreek_start_schedule(hellcreek, port); 1667 mutex_unlock(&hellcreek->reg_lock); 1668 return 0; 1669 } 1670 1671 mutex_unlock(&hellcreek->reg_lock); 1672 1673 /* Schedule periodic schedule check */ 1674 schedule_delayed_work(&hellcreek_port->schedule_work, 1675 HELLCREEK_SCHEDULE_PERIOD); 1676 1677 return 0; 1678 } 1679 1680 static int hellcreek_port_del_schedule(struct dsa_switch *ds, int port) 1681 { 1682 struct hellcreek *hellcreek = ds->priv; 1683 struct hellcreek_port *hellcreek_port; 1684 1685 hellcreek_port = &hellcreek->ports[port]; 1686 1687 dev_dbg(hellcreek->dev, "Remove traffic schedule on port %d\n", port); 1688 1689 /* First cancel delayed work */ 1690 cancel_delayed_work_sync(&hellcreek_port->schedule_work); 1691 1692 mutex_lock(&hellcreek->reg_lock); 1693 1694 if (hellcreek_port->current_schedule) { 1695 taprio_offload_free(hellcreek_port->current_schedule); 1696 hellcreek_port->current_schedule = NULL; 1697 } 1698 1699 /* Then select port */ 1700 hellcreek_select_tgd(hellcreek, port); 1701 1702 /* Disable gating and return to regular switching flow */ 1703 hellcreek_write(hellcreek, 0xff << TR_TGDCTRL_ADMINGATESTATES_SHIFT, 1704 TR_TGDCTRL); 1705 1706 mutex_unlock(&hellcreek->reg_lock); 1707 1708 return 0; 1709 } 1710 1711 static bool hellcreek_validate_schedule(struct hellcreek *hellcreek, 1712 struct tc_taprio_qopt_offload *schedule) 1713 { 1714 size_t i; 1715 1716 /* Does this hellcreek version support Qbv in hardware? */ 1717 if (!hellcreek->pdata->qbv_support) 1718 return false; 1719 1720 /* cycle time can only be 32bit */ 1721 if (schedule->cycle_time > (u32)-1) 1722 return false; 1723 1724 /* cycle time extension is not supported */ 1725 if (schedule->cycle_time_extension) 1726 return false; 1727 1728 /* Only set command is supported */ 1729 for (i = 0; i < schedule->num_entries; ++i) 1730 if (schedule->entries[i].command != TC_TAPRIO_CMD_SET_GATES) 1731 return false; 1732 1733 return true; 1734 } 1735 1736 static int hellcreek_port_setup_tc(struct dsa_switch *ds, int port, 1737 enum tc_setup_type type, void *type_data) 1738 { 1739 struct tc_taprio_qopt_offload *taprio = type_data; 1740 struct hellcreek *hellcreek = ds->priv; 1741 1742 if (type != TC_SETUP_QDISC_TAPRIO) 1743 return -EOPNOTSUPP; 1744 1745 if (!hellcreek_validate_schedule(hellcreek, taprio)) 1746 return -EOPNOTSUPP; 1747 1748 if (taprio->enable) 1749 return hellcreek_port_set_schedule(ds, port, taprio); 1750 1751 return hellcreek_port_del_schedule(ds, port); 1752 } 1753 1754 static const struct dsa_switch_ops hellcreek_ds_ops = { 1755 .devlink_info_get = hellcreek_devlink_info_get, 1756 .get_ethtool_stats = hellcreek_get_ethtool_stats, 1757 .get_sset_count = hellcreek_get_sset_count, 1758 .get_strings = hellcreek_get_strings, 1759 .get_tag_protocol = hellcreek_get_tag_protocol, 1760 .get_ts_info = hellcreek_get_ts_info, 1761 .phylink_get_caps = hellcreek_phylink_get_caps, 1762 .port_bridge_flags = hellcreek_bridge_flags, 1763 .port_bridge_join = hellcreek_port_bridge_join, 1764 .port_bridge_leave = hellcreek_port_bridge_leave, 1765 .port_disable = hellcreek_port_disable, 1766 .port_enable = hellcreek_port_enable, 1767 .port_fdb_add = hellcreek_fdb_add, 1768 .port_fdb_del = hellcreek_fdb_del, 1769 .port_fdb_dump = hellcreek_fdb_dump, 1770 .port_hwtstamp_set = hellcreek_port_hwtstamp_set, 1771 .port_hwtstamp_get = hellcreek_port_hwtstamp_get, 1772 .port_pre_bridge_flags = hellcreek_pre_bridge_flags, 1773 .port_prechangeupper = hellcreek_port_prechangeupper, 1774 .port_rxtstamp = hellcreek_port_rxtstamp, 1775 .port_setup_tc = hellcreek_port_setup_tc, 1776 .port_stp_state_set = hellcreek_port_stp_state_set, 1777 .port_txtstamp = hellcreek_port_txtstamp, 1778 .port_vlan_add = hellcreek_vlan_add, 1779 .port_vlan_del = hellcreek_vlan_del, 1780 .port_vlan_filtering = hellcreek_vlan_filtering, 1781 .setup = hellcreek_setup, 1782 .teardown = hellcreek_teardown, 1783 }; 1784 1785 static int hellcreek_probe(struct platform_device *pdev) 1786 { 1787 struct device *dev = &pdev->dev; 1788 struct hellcreek *hellcreek; 1789 struct resource *res; 1790 int ret, i; 1791 1792 hellcreek = devm_kzalloc(dev, sizeof(*hellcreek), GFP_KERNEL); 1793 if (!hellcreek) 1794 return -ENOMEM; 1795 1796 hellcreek->vidmbrcfg = devm_kcalloc(dev, VLAN_N_VID, 1797 sizeof(*hellcreek->vidmbrcfg), 1798 GFP_KERNEL); 1799 if (!hellcreek->vidmbrcfg) 1800 return -ENOMEM; 1801 1802 hellcreek->pdata = of_device_get_match_data(dev); 1803 1804 hellcreek->ports = devm_kcalloc(dev, hellcreek->pdata->num_ports, 1805 sizeof(*hellcreek->ports), 1806 GFP_KERNEL); 1807 if (!hellcreek->ports) 1808 return -ENOMEM; 1809 1810 for (i = 0; i < hellcreek->pdata->num_ports; ++i) { 1811 struct hellcreek_port *port = &hellcreek->ports[i]; 1812 1813 port->counter_values = 1814 devm_kcalloc(dev, 1815 ARRAY_SIZE(hellcreek_counter), 1816 sizeof(*port->counter_values), 1817 GFP_KERNEL); 1818 if (!port->counter_values) 1819 return -ENOMEM; 1820 1821 port->vlan_dev_bitmap = 1822 devm_kcalloc(dev, 1823 BITS_TO_LONGS(VLAN_N_VID), 1824 sizeof(unsigned long), 1825 GFP_KERNEL); 1826 if (!port->vlan_dev_bitmap) 1827 return -ENOMEM; 1828 1829 port->hellcreek = hellcreek; 1830 port->port = i; 1831 1832 INIT_DELAYED_WORK(&port->schedule_work, 1833 hellcreek_check_schedule); 1834 } 1835 1836 mutex_init(&hellcreek->reg_lock); 1837 mutex_init(&hellcreek->vlan_lock); 1838 mutex_init(&hellcreek->ptp_lock); 1839 1840 hellcreek->dev = dev; 1841 1842 res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "tsn"); 1843 if (!res) { 1844 dev_err(dev, "No memory region provided!\n"); 1845 return -ENODEV; 1846 } 1847 1848 hellcreek->base = devm_ioremap_resource(dev, res); 1849 if (IS_ERR(hellcreek->base)) 1850 return PTR_ERR(hellcreek->base); 1851 1852 res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "ptp"); 1853 if (!res) { 1854 dev_err(dev, "No PTP memory region provided!\n"); 1855 return -ENODEV; 1856 } 1857 1858 hellcreek->ptp_base = devm_ioremap_resource(dev, res); 1859 if (IS_ERR(hellcreek->ptp_base)) 1860 return PTR_ERR(hellcreek->ptp_base); 1861 1862 ret = hellcreek_detect(hellcreek); 1863 if (ret) { 1864 dev_err(dev, "No (known) chip found!\n"); 1865 return ret; 1866 } 1867 1868 ret = hellcreek_wait_until_ready(hellcreek); 1869 if (ret) { 1870 dev_err(dev, "Switch didn't become ready!\n"); 1871 return ret; 1872 } 1873 1874 hellcreek_feature_detect(hellcreek); 1875 1876 hellcreek->ds = devm_kzalloc(dev, sizeof(*hellcreek->ds), GFP_KERNEL); 1877 if (!hellcreek->ds) 1878 return -ENOMEM; 1879 1880 hellcreek->ds->dev = dev; 1881 hellcreek->ds->priv = hellcreek; 1882 hellcreek->ds->ops = &hellcreek_ds_ops; 1883 hellcreek->ds->num_ports = hellcreek->pdata->num_ports; 1884 hellcreek->ds->num_tx_queues = HELLCREEK_NUM_EGRESS_QUEUES; 1885 1886 ret = dsa_register_switch(hellcreek->ds); 1887 if (ret) { 1888 dev_err_probe(dev, ret, "Unable to register switch\n"); 1889 return ret; 1890 } 1891 1892 ret = hellcreek_ptp_setup(hellcreek); 1893 if (ret) { 1894 dev_err(dev, "Failed to setup PTP!\n"); 1895 goto err_ptp_setup; 1896 } 1897 1898 ret = hellcreek_hwtstamp_setup(hellcreek); 1899 if (ret) { 1900 dev_err(dev, "Failed to setup hardware timestamping!\n"); 1901 goto err_tstamp_setup; 1902 } 1903 1904 platform_set_drvdata(pdev, hellcreek); 1905 1906 return 0; 1907 1908 err_tstamp_setup: 1909 hellcreek_ptp_free(hellcreek); 1910 err_ptp_setup: 1911 dsa_unregister_switch(hellcreek->ds); 1912 1913 return ret; 1914 } 1915 1916 static int hellcreek_remove(struct platform_device *pdev) 1917 { 1918 struct hellcreek *hellcreek = platform_get_drvdata(pdev); 1919 1920 if (!hellcreek) 1921 return 0; 1922 1923 hellcreek_hwtstamp_free(hellcreek); 1924 hellcreek_ptp_free(hellcreek); 1925 dsa_unregister_switch(hellcreek->ds); 1926 platform_set_drvdata(pdev, NULL); 1927 1928 return 0; 1929 } 1930 1931 static void hellcreek_shutdown(struct platform_device *pdev) 1932 { 1933 struct hellcreek *hellcreek = platform_get_drvdata(pdev); 1934 1935 if (!hellcreek) 1936 return; 1937 1938 dsa_switch_shutdown(hellcreek->ds); 1939 1940 platform_set_drvdata(pdev, NULL); 1941 } 1942 1943 static const struct hellcreek_platform_data de1soc_r1_pdata = { 1944 .name = "r4c30", 1945 .num_ports = 4, 1946 .is_100_mbits = 1, 1947 .qbv_support = 1, 1948 .qbv_on_cpu_port = 1, 1949 .qbu_support = 0, 1950 .module_id = 0x4c30, 1951 }; 1952 1953 static const struct of_device_id hellcreek_of_match[] = { 1954 { 1955 .compatible = "hirschmann,hellcreek-de1soc-r1", 1956 .data = &de1soc_r1_pdata, 1957 }, 1958 { /* sentinel */ }, 1959 }; 1960 MODULE_DEVICE_TABLE(of, hellcreek_of_match); 1961 1962 static struct platform_driver hellcreek_driver = { 1963 .probe = hellcreek_probe, 1964 .remove = hellcreek_remove, 1965 .shutdown = hellcreek_shutdown, 1966 .driver = { 1967 .name = "hellcreek", 1968 .of_match_table = hellcreek_of_match, 1969 }, 1970 }; 1971 module_platform_driver(hellcreek_driver); 1972 1973 MODULE_AUTHOR("Kurt Kanzenbach <kurt@linutronix.de>"); 1974 MODULE_DESCRIPTION("Hirschmann Hellcreek driver"); 1975 MODULE_LICENSE("Dual MIT/GPL"); 1976